Key-fastener



(No Model.)

G. HUTTENLOCHER.

KEY FAS'IENER.

No. 429,239. Patented June 3, 1890.

Y UNITED STATES PATENT OFFICE.

GOTTLIEB H. HUTTENLOOHER, OF DES MOINES, IOWA.

VKEY-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 429,239, dated J' une3, 1890.

Application filed September 13, 1889. Serial No. 323,883. (No model.)

To all' wwm, it may concern:

Be it known that I, GOTTLIEB H. HUTTEN- LOCHER, a citizen of the UnitedStates of America, and a resident of Des Moines, in the county of Polkand State of Iowa, have invented a Device for Fastening a Key in aDoor-Lock, of which the following is a specification.

Heretofore an escutcheon-plate has had an integral lateral extension,and the parallel side portions of said extension bent toward the centerto produce bearings 011 the outside of the escutcheon, in which bearingswas iitted a slide that had a bifurcated end adapted to engage the stemof a key in the door-lock in such a manner that a person on the outsideof the door cannot turn the key or remove it by means of any key orinstrument introduced into the key-hole from the outside, as required tounlock the door from the outside.

My invention consists in the construction and combination ot a slidewith a key-hole escutcheon and lock on a door, as hereinafter set forth,pointed out in my cla-im, and illustrated in the accompanying drawings,in Which- Figure l shows the under side of a key-hole plate orescutcheon that has a lateral extension to which a slide is attached.Fig. 2 is a sectional View through the line 0c a. of Fig. l. Fig. 3 is aface view, andFig. 4 an edge view, of a piece of a door to which mycomplete device is applied as required for practical use.

A represents an escutcheon that may vary in shape and size, as desired.

B is a lateral extension of the escutcheonplate, preferably madeintegral therewith. Dotted lines in Fig. l indicate that it may beextended from the opposite edge, as required for a left-hand door.

c is a right-angled projection on the under side of the part B.

d is a sliding plate on the top of the eXtension B. It has a slot f inits front end adapting it to slip oli and on the flat stem of a door-keyof common form. It also has an outward projection or knob g, formed onor iXed thereto, that is adapted to be engaged by a persons fingers, asrequired to move the slide on and off the stem ot1 a key when the dooris locked and the key is left in the' key-hole engaged With the bolt ofthe lock.

h is a slot in the plate B, and is a block fitted in the slot and fixedto the plate CZ, so that it will overlap the edges of the slot, asrequired to retain the plate (Z flat upon the plates A B and to slidewith the plate d.

m is a coiled spring fixed to the block@l and the projection c, so thatit will in its normal condition press the slide d across the keyhole toengage and hold the key fast in the lock in the position'shown in Fig.4f.

The part B may be formed separate, as indicated by dotted lines in Fig.3, and attached to a door at the side of a fixed escutcheon by means ofscrews.

The spring may be dispensed with and the slide moved in oppositedirections by pressure upon the knob g, as required to fasten andunfasten a key in the key-hole.

I claim as my invention- The plate A, the extension B, provided with aprojection c and slot 7L, the slide d, having a slot f, a projection g,and iixed block il, and a spring m, constructed and combined to operatein the manner set forth, for the purposes stated.

GOTTLIEB H. HUTTENLOCHER. Witnesses:

MARTIN P. SMITH, THOMAS G. ORWIG.

